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LS1240A View Datasheet(PDF) - Wing Shing International Group

Part NameDescriptionManufacturer
LS1240A Electronic Two-Tone Ringer WingShing
Wing Shing International Group WingShing
LS1240A Datasheet PDF : 4 Pages
1 2 3 4
LS1240A
ABSOLUTE MAXIMUM RATINGS
Symbol
VAB
VAB
DC
Top
Tstg
Parameter
Calling Voltage (f = 50 Hz) Continuous
Calling Voltage (f = 50 Hz) 5s ON/10s OFF
Supply Current
Operating Temperature
Storage and Junction Temperature
Value
120
200
30
– 0 to + 70
– 65 to + 150
Unit
Vrms
Vrms
mA
°C
°C
THERMAL DATA
Symbol
Rth j-amb
Parameter
Thermal Resistance Junction-ambient
Value
Unit
Max
00
°C/W
ELECTRICAL CHARACTERISTICS
(Tamb = 25 °C; Vs = applied between pins 7-2 unless otherwise specified)
Symbol
Parameter
Test Conditions
Vs
IB
VON
VOFF
RD
Supply Voltage
Current Consumption without Load (pins 8-1)
V8-1 = 9.3 to 25 V
Activation Voltage
Sustaining Voltage
Differential Resistance in OFF Condition (pins 8-1)
VOUT
IOUT
Output Voltage Swing
Short Circuit Current (pins 5-2)
Vs = 20V RL = 250
AC OPERATION
Min.
Typ. Max. Unit
26 V
1.5 1.8 mA
6.4
k
Vs – 5
V
70
mA
f1
f2
fSWEEP
Output Frequencies
fout1
fout2
fOUT1
fOUT2
Programming Resistor Range
Sweep Frequency
Vs = 26V, R1 = 14k
Vs = 0 V
Vs = 6V
1.33
kHz
1.43
8
56 k
R1 = 14k, C1 = 100nF 5.25 7.5 9.75 Hz
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